Temperature-controlling apparatus.



A. MAGPHEE- TEMPERATURE CONTROLLING APPARATUS.

APPLICATION FILED MAY 13, 1910.

1,038,402. Patented Sept. 10, 1912.

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. q vbli m cweo Alia 613m A. MAGPHEE. TEMPERATURE CONTROLLING APPARATUS. APPLICATION FILED my 1;, 1910.

1,038,402. Patented Sept. 10,1912.

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-APPLIOATION FILED MAY 13', 1910.

' Patented Sept. 10,1912.

3 SHEETS-SHEET 3.

IIIIIII/IIIIIIIIII Anderson/1 a a subject of the King of Great Britain, re-- equipped with an adjustable mixing damper thermostatically controlled damper actuatthe apartments.

--With these and other objects in view, the invention consists'in the construction and novel combination of-parts hereinafter fully described, illustrated in; the accompanying desire ,so as to prevent sudden fluctuations -tion partly in section of a temperature con- ANDERSON M'noPHEE,-OF NEW YORK, N. 'Y.

Specification of Letters Patent.

TEMPERATURE-CONTROLLING APPARATUS.

' 'Patented Sept. 10,1912.

Application filed May 13, 1910. Serial No. 561,182.

To all it may concern:

Be it known that LANDERSON MACPHEE,

siding at New York, in the county'of New York and State of New York, have invented a new and useful Temperature-Controlling Apparatus, of which the following is a specification. 3

The invention relates to a temperature: controlling apparatus. The object of the present invention is to provide a simple, inexpensive and efficient.- temperature controlling apparatus, designed for regulating the temperature of the airdelivered to the living quarters of ships, buildings, store houses, etc., for heating and 1 ventilating or cooling and ventilating'the' same. 7

Another object of the invention is to provide a temperature cont-rolling apparatus,

for varying the relative volumes of air of different temperature, and provided with:

ing mechanism, adapted to be operated by steam from a radiator, boiler, or other source of supply, and provided with means for. COIltI'OlllIlg the flow of steam to the damper actuatlng mechanism, whereby the mixin damper may be moved as, slowly as i'n-the temperature of the air delivered to drawings, and pointed" out in the claims? hereto' appended; it being understood that various changes in the form, proportion,';

sacrificing any of the advantages 0 the ini vention. r In the drawings :Figure 1 is an elevatrolling apparatus,, constructed in accord-j ance with this invention, and showing the preferred form of the invention. Fig. 2 is an enlarged sectional view, illustrating the construction of the damper actuating mechanism. 3 is a transverse sectional view, taken substantially on the line 3-3 of Fig. 1. Fig. 4 is an enlarged sectional view on the line 44 of Fig. 1. F 5 is a vertical sectional view, illustrating a simpler form of the invention. i

Like numerals of reference designate corresponding parts in all the figures of the drawings. In the embodiment of the invention illustrated in Fig. 5, in which'is shown the simpler form of the invention, 1 designates a pivotally mounted mixin damper, operating in a mixed air conduit 2 and located at the juncture of hot and cold air ducts 3 and 4, preferably formed by dividing a port-ion of the conduit 2 by a central longitudinal partition 5, but the conduit and the hot and cold air ducts may be constructed in any preferred manner, as will be readily under stood, The mixed air conduit is designed to be connected by suitable branches to the various apartments to be heated and ventilated or cooled and ventilated. In practice the cold air duct will be a fresh air duct, or a duct supplied with air from the outside atmosphere, and while I have termed the duct 3 a hotair' duct, it maybe utilized in warmer climatesas a conduit for'cold air "damper 1 is preferably pivoted at 6 to the adjacent end of the partition 5, and it is provided with an exterior arm 7 and is adapted to swing acrosszthe conduit to constrictto greater. or less degree the discharge' end or outlet of either of the ducts '3 and 4. The'arm 7 of the damper is conneotcdliy'a link 8 with a rod 9 of apiston jlO,-operating within a cylinder 11 and controlled by a slide valve 12. The slide valve is 'mounted'within a steam chest 13, having inlet-ports 14 leading to the ends of the cylinder. The steam chest is also provided with a central exhaust port or passage 15,

designed in practice to be connected with'a condenser (not shown). pipe 16 is connected with the steam chest, and the slide valveis-adapted to be shifted to admit steam to one of the inlet ports or passages, and to connect the other port or passage with the exhaust port'or passage, and when steam is admitted to one end of the cylinder, it is exhausting from the opposite end of the cylinder. The cylinder, the piston and the valve constitute a motor A steam supply and various forms may be employed for actuating the damper. The slide valve is provided with a bore or opening and is secured to the center of a-valve stem 17 by nuts 18, mounted on the valve stem and engaging the valve at the opposite ends thereof, but any other suit-able means may be employed for securing the valve to the valve stem. The nuts, however, providean adjustable connection so that the valve may be properly positioned with relation to the ports or passages of the valve chest. The valve rod, which passes through stuffing boxes 19 at opposite ends of the valve or steam chest, extendsfrom the same in opposite directions and has its terminal portions arranged in solenoids 20 and 21, mounted on suitable brackets 22 having attaching pertio-ns 23 secured to the cylinder heads, but

the solenoids may be supported in any other.

suitable manner. The solenoids 20 and 21 may be of any preferred C()I1St1110t1011, l)11t are preferably provided with metallic casin'gs, as indicated, in order to increase their strength. The valve stem or the terminal portions thereof are constructed of soft iron, or other suitable material so as to be attracted by the solenoids when either is energized. The outer terminals of the solenoids are connected bywires 24 and 25 with a common battery wire 26, which is connected with one of the poles of a battery 27. The other pole of the battery 27 is connected by a wire 28 with a pivotally mounted pointer or member 29 of a thermostat 30. Instead of a battery any other source of electric supply may be utilized for energizing the solenoids. The thermostat 30, which is provided with a suitable casing, may be of any preferred construction and the pivotally mounted pointer or member 29 is connected with one side of the casing by an expansihle contractile bar or connection 31, secured at one end to the pivoted member 29 and at the other end to one side of the casing, and adapted to be affected 'in the usual manner by variations in the temperature. The pivoted member 29 moves between spaced contacts 32 and 33, connected by wires '34 and 35 with the'inner terminals of coils of the solenoids. When the temperature to which the thermostat is subjected lies above-a redetermined point, the pivoted member of the thermostat will be moved to the contact 32, which will close the circuit of the solenoid 20, which will be energized and which will attract the valve rod and slide the valve to the right. This will admit steam to the lower end of the cylinder, and the piston will be moved toward the upper end, thereby operating the mixing damper and cans-- ing the same to close down at the outlet of the hot air duct. As soon as the temperature is lowered sufliciently, the sensitive bar or element 31 of the thermostat will contract and carry the pivoted member 29 away from the contact 32, which will break the circuit in which the solenoid 20 is placed. When the temperature falls below a predotermined point, the contraction of the sensitive bar or element 31 will carry the pivoted member 29 to the other contact 33, which will close the circuitat that side of the thermostat and energize the solenoid 21. The solenoid 21 will attract the valve rod and move the valve to its opposite position, and the mixing damper will be moved in the opposite direction and caused to close down on. the cold air duct and open the hot air duct. The movement of the mixing damper may be made exceedingly slow by means of a valve 36, placed in the steam pipe and adapted to control the flow of steam to the steam chest. By controlling the flow of steam in this manner, the device may be regulated so that it will require ten or fifteen minutes for the piston to travel from one end of the cylinder to the other. The temperature in the room may be maintained within a few degrees of a predetermined point, as any rise in the temperature will operate to move the damper in one direction, and a corresponding fall in the temperature will move the damper in the opposite direction. VVheu through the movement. of the damper the temperature has been changed'suificiently to withdraw the pivoted member from the con-. tact, the circuit will be broken and the damper will remain in its adjusted position until conditions produce a further adjust ment of the said damper. This is efiectecl by means of a pair of coiled springs 17", disposed on the valve stem 17 and preferablyinterposed between adjustable collars 18 and the casings of the solenoids. The springs, however, may be of any preferred form and may be arranged in any other desired manner for automatically actuating the valve rod or stem for moving the valve 12 to a central position for shutting off the steam from each end of the cylinder. In practice, the cylinder, the piston and the valve mechanism will be comparatively small and only a relatively small amount if valve travel will be necessary. The solenoids will be of sufiicient strength to actuate the valve rod or stem and compress one of the springs thereof. The springs willcenter the valve and maintain the same in' such position when the valve rod or stem 18 arranged vertically, or in any otherposition in which it may be advisable to place it.

In the embodiment of the invention illustrated in-Figs. 1 to 4 inclusive is illustrated the preferred form of the invention in which a conduit 37 is divided by a longitudinal. partition 38 into a hot air duct 39 and a cold air duct 40. A fan or blower 4:1 is arranged at the inlet end of the conduit 37, and a fresh air supply pipe 42 is connected with the eye with a' centrally arranged exhaust port or of the fan. The partition 38 divides the air, a portion assing through the warm air duct 39 and a portion through the cold air duct 40. The conduit 37 is enlarged at 43 'at the hot air duct 39 to form a casing for a heating device 44, preferably in the form of a steam radiator, provided with feed and return pipes 45 and 46, having controlling valves 47 and 48. Instead of steam, brine from a refrigerating plant, or any other cooling medium may be passed through the pipe for cooling the air when necessary. The conduit 37 is connected by suitable branches 49 with the rooms or apartments to be ventilated and heated or cooled, and the tem perature of the air delivered to such rooms or apartments isvregulated by means of a mixing damper 50, pivoted at 51 to the longitudinal partition 38 at the juncture of the hot and cold air ducts, and provided with an exterior arm-52, which is connected by a link 53 with the rod 54 of a piston 55. The piston'rod '54 extends through a suitable stuffing box 56 at one end of a cylinder 57 ir whlch the piston operates. The cylinder is equipped with a steam chest 58 having inlet ports 59 leading to the ends of the cylinder. The steam chest is also, provided passage 60, and the admission and exhaust steam is controlled by a slide valve 61, conslructed and operating similar to the valve 12 heretofore described, and secured to the center of a valve rod by nuts 62.; The valve rod passes through stuffing boxes 63 at the ends of the valve chest, and its terminal portions are arranged in solenoids 64' and 65 and are adapted to be attracted by the same, whereby the valve is shifted from one positior'i to the other. The end portions of the valvestem or rod are equipped with coiled springs 61, interposed between adjustable collars 62 and. the casings of the solenoids 64 and 65, and operable to center the valve in the manner heretofore explained to cut off the steam from the cylinder and cause the damper to remain in its adjusted position. The' steam is admitted to the valve chest by means of a pipen66, equipped with a valve 67 for controlling the flow of steam to the valve chest, so that the piston may be made to travel as slowly'as desired. The solenoids 64 and are supported by suitable brackets 68, having attaching portions 69secured to the heads of the cylinder." The lower'ter minals of the solenoidsare connected by wires 70 and 71 with a battery'wire-72, and the other terminals of the solenoids are 0on nested by wires 73 and 74 with spaced conof a battery 7 9, or other source of electric taots 75 and 76 of a thermostat, constructed 80, which when the temperature within the thermostat rises above a predetermined point and moves the pivoted member to the contact 75 and which when the temperature within the thermostat falls below a predev termined point contracts and swings the pivoted member 77 against the contact 76. The

thermostat is connected by apipe 8l.with

the mixed air conduit 37,, and has a flaring or funnel-shaped inlet or mouth 82, located within the mixed air conduit in line with.

the cold air duct, and adapted to receive a same to the thermostat casing. The thermostat by being connected with the mixed air or distributing duct at the point where the air is mixed enables the temperature ofsuch mixed air to be controlled without placing thermostats in the various rooms or apartments to be ventilated and cooled orheated, thereby greatly simplifying the apparatus and reducing the cost of the same and en- 1 ablin the entire apparatus to be located practlcally at a single point or place instead of at points more or less remote from another.

The mixing damper and, the mechanism .portion of the mixed air for'conducting the v for actuating the same may be applied to" variousindirect heating systems where hot and cold air are mixed preparatory to disa tributing the same to the various rooms or' stem, thermostatically operated meansv for actuating thevalve including a pairof solenoids co-actiiig with the valve stem, andmeans for automaticallymovingthe valve to a central position to out oil the motive power and stop the damper at an intermediate point.

2. In a temperature controlling apparatus, the combination of a movable damper,

a cylinder, a piston operating in the cylinder and connected with the damper, a valve chest, solenoids mounted at opposite ends of j the-valve chest, a valve for controlling the admission of motive fluid to the cylinder, 21 valve stem connected with the valve and projecting beyond the ends of the valve chest-and extendin into the said solenoids and co-acting therewith, a "thermostat, thermostatically "operated circuits connected with the soleis)" noids, and means for automatically centering the. valve for cutting ofi the motive power, whereby the damper may be stopped at an intermediate point of its travel.

3. In a temperature controlling apparatus, the combination of a movable-damper, a cylinder, a piston operating in the cylinder and connected with the dam er, a valve chest, a valve for controlling t e admission of motive fluid to the cylinder, brackets mounted on the cylinder at the end of the valve chest, solenoids supported by the brackets, a valve stem connected with the valve and projecting from the valve chest and adapted to be drawn into either of the solenoids and co-acting directly therewith, thermostatically controlled circuits for operating the solenoids, and springs mounted on the valve chest and arranged to engage the solenoids for centering the valve to cut oil the pressure when the circuits are broken,

whereby the damper may be stopped at an intermediate point ofits travel.

4. A temperature controlling apparatus comprising hot. and cold air ducts, a mixed air conduit, a mixing damper arranged to close or partially close either of the said* ducts, and a piston connected with the damper, a cylinder receiving the piston'and having a valve chest, a valve for controlling the admission of a motive fluid to the cylinder, a valve stem connected with the valve and extending beyond the valve chest, opposite solenoids arranged to receive and attract the valve stem for actuating the valve, a thermostat including. a movable member, spaced cont-acts between which the said member moves, a sensitive element connected with the said member, a source of electric supply, and separate circuits connected with the solenoids, the electric supply and the contacts and movable member of the thermostat). A

including a mixed air conduit, a partition extending longitudinally of the conduit and dividing a portion of the same into hot and cold air ducts, a fan or blower for forcing air through the ducts, a heating device arranged in the hot duct, a mixing damper arranged in the partition for varying relative volumes of air delivered to the mixed air conduit, a motor connected with the damper and provided with a pressure controlling valve, thermostatically controlled means for operating the valve, and

means for automatically centering the valve and for returning the same to a central posltion whenreleased by the thermostatically controlled means, whereby the power may i be cut off and the damper stopped at an in- I termediate point of its trave arranged to vary the relative volumes of air the and directly receive the valve stem, and

means for automatically centering the valve to out off the pressure when the valve stem is released by the solenoids, whereby the damper may be stopped at an intermediate point of its travel.

. 7. A temperature controlling apparatus comprising hot and cold air ducts, a damper arranged to vary the relative volumes of air discharged from the said ducts, a motor connected with the damper and having a pressure controlling valve provided with a projecting stem, thermostatically operated means for actuating the valve including a pair of solenoids arranged to cooperate with and directly receive the valve stem, and a spring for centering the valve to cut off the pressure when the said valve is released by the solenoids, whereby the damper may be stopped at an intermediate point of its travel.

connected with the damper and having a pressure controlling valve provided with a projecting stem, thermostatically operated means for actuating the valve including a pair of solenoids arranged to cooperate with and directly receive the valve stem, and coiled springs mounted on the valve stem and engaging the solenoids for automatically centering the valve to cut ofi the power when the valve is released by the solenoids, whereby the damper may be stopped at an intermediate point of its travel.

9. A temperature controlling apparatus comprising hot and cold air ducts, a damper arranged to vary the relative volumes of air discharged from the said ducts, a motor connected wit-h the damper and having a pressure controlling valve provided with a pro jecting stem, thermostatically operated means for actuating the valve including a pair of solenoids arranged to cooperate with and directly receive the valve stem, adjustable means mounted on the valve stem in spaced relation with the solenoids, and coiled springs disposed on the valve stem and interposed between the said adjustable means and the solenoids for automatically centering the valve to cut off the pressure when the circuits are broken, whereby the damper may be stopped at an intermediate point of its travel. 6-, A temperature controlling'apparatus comprising hot and cold air ducts, a damper I 10. A temperature controlling apparatus including hot an d cold air ducts, a mixed air conduit, a mixlng damper arranged to vary the relative volumes of air delivered to, the mixed air conduit, a thermostat having a casing, a duct extendingfrom the thermostat casing to the mixed air conduit,

a motor having a pressure cont-rolling valve 10 such position to cut off the pressure, and

means operated by thethermosta't for actuating the valve.

In testimony that'I claim the foregoing as'my own, I have hereto aflixed my s gna-- ture in the presence of two witnesses. I

ANDERSON AQPHEE.

Witnesses:

LAURA E. SMITH, A. V. MANTLE. 

